uPVC windows
uPVC windows in Oxford & Oxfordshire
Stylish, energy-efficient double glazed windows for every kind of home – from period properties in North Oxford and Headington to family homes in Bicester, Witney and Abingdon.
Our uPVC window collections
Five systems, each suited to a different style of property and budget. We’ll help you choose.
Residence 9
An authentic replica of 19th-century flush timber windows, designed and made in Britain from a virtually maintenance-free composite material. No painting or staining – ever.
Uniquely engineered easy-clean rebates wipe clean in seconds, and optional steel reinforcement allows grand entrance screens and large bays.
- Designed for period homes and conservation areas
- Double or triple glazing with market-leading thermal and acoustic performance
- One of the highest British Standard weather test ratings
- Heritage colours, with a different colour inside and out
- Best for
- Georgian and Victorian homes, cottages, listed and conservation properties
- Available as
- Windows, French doors, residential and composite doors, orangeries
Residence 7
A chic flush sash design, inside and out, with perfectly equal glass sightlines for a symmetrical, contemporary look that still suits traditional homes.
Choose square glazing beads for a crisp finish or decorative ones to soften it, and mitred, seamless or timber-look joints to suit your property.
- Seven-chamber design for security, weather and thermal performance
- Five glazing bead styles to personalise the inside
- Timberweld® option for the ultimate timber alternative
- Wide range of foil colours, including woodgrains
- Best for
- New builds, barn conversions, extensions, cottages and semis
- Available as
- Casement, shaped, bay and bow windows, single and French doors
Timeless
A traditional flush sash window reminiscent of early 19th-century timber, with an authentic woodgrain finish. Designed in Britain with heritage homes in mind.
Thermal performance far exceeds timber, and the choice of classic or contemporary styles suits anything from a character cottage to an architectural new build.
- Ideal where authentic looks matter, including conservation areas
- Multi-point locking as standard
- Flush sash and French window options
- Heritage colour collection and period hardware
- Best for
- Character cottages, townhouses and upmarket new builds
- Available as
- Flush sash windows, French windows and doors
OMNIA
A next-generation slim profile that’s fully flush inside and out, with more glass and less frame to bring in more light.
Corners emulate traditional timber joints, and the finely textured Feinstruktur finish closely resembles powder-coated aluminium.
- Triple glazing with U-values as low as 0.79 W/m²K
- Double-rebated frames for extra weather protection
- Zero sight-line mullion option
- Matt and textured colours such as Agate Grey, Sage and Black Ulti-Matt
- Best for
- Contemporary homes, renovations and anyone wanting a slimmer frame
- Available as
- Casement, tilt and turn and bay windows, French and residential doors
VEKA Halo
British-designed windows and doors with hundreds of configurations – casements, tilt and turn, sliding sash and flush styles – to suit any home and budget.
Choose bevelled profiles for clean, modern lines or sculptured profiles for a softer, traditional look, then add Georgian bars and colour-matched hardware.
- The widest choice of window and door styles
- Bevelled (modern) or sculptured (traditional) profiles
- Energy-efficient glazing options
- Huge colour range, from white to woodgrains and heritage shades
- Best for
- Family homes and everyday replacements on any budget
- Available as
- Casement, flush, sliding sash and tilt and turn windows, entrance, French and patio doors, conservatories
Choosing the right windows for your home
Every home is different, and some window styles naturally suit some properties better than others.
- Cottages and heritage homes often suit flush sash windows with timber-style detailing.
- Victorian and Edwardian homes benefit from heritage designs that keep their character while improving insulation.
- Modern homes and extensions work best with sleek frames and larger glazed areas.
- Family homes usually want a practical balance of looks, security and price.
Why choose Isis Windows?
Local since 1997
A local Oxfordshire team with over 25 years’ experience fitting windows across Oxfordshire.
Honest advice
We’ll recommend what genuinely suits your home and budget – no pushy sales.
Our own fitters
Courteous, tidy installers who never leave your home unsecured overnight.
10-year guarantee
Every window is covered for ten years, including hardware.
FENSA registered
You’ll receive a FENSA certificate confirming building regulations compliance.
Free recycling
Old uPVC windows are recycled through Eurocell at no charge.
Recent uPVC window installations
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uPVC windows: frequently asked questions
What is the difference between Residence 7 and Residence 9 windows?
Residence 7 has a more modern flush appearance, while Residence 9 is designed to replicate traditional timber windows with more heritage detailing.
Which windows are best for period homes in Oxfordshire?
Residence 9 windows are often the preferred option for period and heritage-style homes because of their authentic traditional appearance.
Are flush sash windows popular in Oxfordshire?
Yes. Flush sash windows are extremely popular across Oxfordshire, especially for cottages, village homes and premium modern developments.
Do all your windows come with double glazing?
Yes. All our uPVC windows are supplied with high-performance double glazing as standard.
Can you help me choose the right window system?
Absolutely. We regularly help homeowners compare window styles, colours and systems to find the best option for their property and budget.
Other window styles
Flush Sash Windows
Timber Effect Windows
Casement Windows
French WindowsGet a price for uPVC windows
Free, no-obligation quotes – from a photo or a home visit.